POLYGONUM. 275 
pressed smooth shining, stam. 5, root creeping.—E. B. 436.— 
St. long when floating. Spikes generally solitary and terminal. 
Fl. rose-coloured. Very variable in the form of its leaves ac- 
cording to its habitation.— Floating or growing upon mud or on 
boggy ground. P. VII.—IX. 
4. P. lapathifolium (L.); spikes oblong cylindrical dense, 1. 
oblong-lanceolate or ovate attenuated at both ends glandular 
beneath, ochree narrow not fringed the upper ones shortly fringed, 
peduncles and perianth glandular-scabrous, nut compressed its 
faces roundish acuminate both hollowed smooth shining scarcely 
covered by the perianth, styles distinct at length divergent and 
reflexed.—E. B. 1382.—a. P. pallidum (With.); 1. all oblong-lan- 
ceolate wavy, spikes axillary or terminal solitary, bracts auricled 
glandular, joinings of the st. scarcely thickened. P. lapathifolium 
R. I. f. 688.—8. P. nodosum (Pers.) ; lower 1. ovate or elliptical 
even, spikes usually 2 together, bracts auricled glabrous, joimings 
of the st. tumid. R.I.f.689, Fries —These varieties are quite con- 
nected by intermediate forms. According to Fries, in var. «. the 
veins of perianth are arcuated and recurved; in var. 8. branched 
and converging at the end. Height 1—2 feet. Fl. pale. St. 
sometimes spotted and |. hoary.—Waste and damp places. A. 
VII.—IX. 
5. P. lacum (R.) ; spikes elongated slender, 1. lanceolate much 
attenuated at both ends wavy glandular beneath, ochree lax 
shortly fringed the floral ones horned, ped. and perianths glan- 
dular scabrous, nut compressed its faces roundish acuminate both 
hollowed shining shorter than the perianth, styles connected be- 
low at length divergent and reflexed—FE. B. 8. 2822. Rf. 
685.—Smaller than the preceding. St. often prostrate. Spikes 
slender and interrupted tthe typical form) ; or spikes thicker and 
continuous (represented in E. B. 8.), and 1. white and woolly be- 
neath.—Damp gravelly places. A. VII.—IX. E, 
6. P. Persicaria (L.); spikes compact ovate-oblong cylindri- 
cal, 1. lanceolate plane minutely tubercled, ochree lax strongly 
fringed, ped. and perianths smooth, nut compressed and gibbous 
on one side or trigonous its faces roundish acuminate smooth 
scarcely covered by the perianth, styles connected half-way up at 
length patent.—E. B. 756.—St. 1—2 feet high. L. more or less 
covered with hairs on both sides, sometimes woolly on the under 
side when it is P. incanum of authors. Ped. sometimes slightly 
hairy, never glandular.— Waste and damp ground. A. VI.—X. 
7. P. mite (Schrank); spikes erect filiform interrupted, 1. lan- 
ceolate slightly wavy, ochree lax funnelshaped pilose strongly 
fringed without glands, perianths without glands, nut (large) 
compressed its faces roughish ovate acute rather shming conver, 
stam. 5, styles connected half-way up “arrect.” E. B. S. 2867. 
